222187055 has 4 divisors (see below), whose sum is σ = 266624472. Its totient is φ = 177749640.

The previous prime is 222187051. The next prime is 222187057. The reversal of 222187055 is 550781222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222187055 - 2² = 222187051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222187051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22218701 + ... + 22218710.

It is an arithmetic number, because the mean of its divisors is an integer number (66656118).

Almost surely, 2^222187055 is an apocalyptic number.

222187055 is a deficient number, since it is larger than the sum of its proper divisors (44437417).

222187055 is an equidigital number, since it uses as much as digits as its factorization.

222187055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44437416.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 222187055 is about 14905.9402588364. The cubic root of 222187055 is about 605.6749110499.

The spelling of 222187055 in words is "two hundred twenty-two million, one hundred eighty-seven thousand, fifty-five".